zephyr

History

Erwan Gouriou 162b6e4b35 samples: Allow use of "CONTROLLER" postfix for LED and GPIO Rework samples using LED and GPIO to enforce use of "CONTROLLER" as LED and PGIO postifx. Change impact all samples that could be run by boards yet moved to GPIO node generations, which is only STM32 for now Signed-off-by: Erwan Gouriou <erwan.gouriou@linaro.org>		2018-04-19 09:32:39 -05:00
..
src	samples: Allow use of "CONTROLLER" postfix for LED and GPIO	2018-04-19 09:32:39 -05:00
CMakeLists.txt	…
README.rst	samples: Allow use of "CONTROLLER" postfix for LED and GPIO	2018-04-19 09:32:39 -05:00
prj.conf	…
sample.yaml	samples: remove more build_only tags	2017-12-28 20:24:29 -05:00

README.rst

.. _blinky-sample:

Blinky Application
##################

Overview
********

The Blinky example shows how to configure GPIO pins as outputs which can also be
used to drive LEDs on the hardware usually delivered as "User LEDs" on many of
the supported boards in Zephyr.

Requirements
************

The demo assumes that an LED is connected to one of GPIO lines. The
sample code is configured to work on boards with user defined buttons and that
have defined the LED0\_* variables in :file:`board.h`.

The :file:`board.h` must define the following variables:

- LED0_GPIO_NAME (or LED0_GPIO_CONTROLLER)
- LED0_GPIO_PIN


Building and Running
********************

This samples does not output anything to the console.  It can be built and
flashed to a board as follows:

.. zephyr-app-commands::
   :zephyr-app: samples/basic/blinky
   :board: arduino_101
   :goals: build flash
   :compact:

After flashing the image to the board, the user LED on the board should start to
blink.